Checking Engine Oil Pressure

Information 

• Carry out the oil pressure test on cylinder bank 1-3 because it is easier to reach. 

1. Unscrew aluminum threaded plug (M12 x 1.5) -1-  on the cylinder head.

   Replace sealing ring.

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   Stopper on pressure oil connection on cylinder head

2. Screw > T90007 - adapter  or the relevant adapter -2-  from the tool set > V.A.G 1342 - Oil Pressure Tester  into the threaded bore.

   Seal it using the old sealing ring for the threaded plug.

   Tighten the selected adapter hand-tight.

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   Adapter for connection line on pressure gauge (shown as an example)

3. Close off bore on pressure gauge VAG 1342 (connection bore for checking oil pressure sensor).
4. Secure connection line on pressure gauge -3-  to the adapter -2-  .

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   Pressure gauge connecting line

5. Connect a battery charger.
6. Connect the PIWIS Tester  to the vehicle and select oil temperature in the actual values.

   Information 

   • An engine oil temperature of 90 - 100° Celsius is required in order to check the oil pressure correctly. 
   • Use the following tool for checking the engine oil pressure manually: 
   • > V.A.G 1342 - Oil Pressure Tester 
7. Start the engine and let it heat up until the engine oil temperature is at least 90° Celsius.

   Read off the oil temperature on the Tester.

8. Rev to the prescribed test speed. Read off the oil pressure on the pressure gauge when doing so.

   Engine speed [rpm]	Oil pressure p min [bar]	Oil temperature t min. in °C
   Idle speed	1.5 ± 0.2	90 - 100
   3, 000	2, 35 ± 0, 2	90 - 100

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   Oil pressure tester gauge

   1	Pressure gauge from VAG 1342
   2	Connecting line

9. Remove test tools.

   Wrap a clean cloth around the test connection on the cylinder head to absorb drops of oil. 

   WARNING: Flammable materials 

   • Risk of fire 

     → When the work is complete, check that all aids and foreign objects (e.g. cloths, tools) are removed from the engine compartment.

10. Make sure there are no tools, foreign objects or aids in the engine compartment! 
11. Fit threaded plug (M12 x 1.5) with a new sealing ring.

    > Tightening torque 25 Nm (19 ftlb.) +/- 2.5 Nm (2 ftlb.) 

12. Remove oil residue.